The V.150.1 standard defines modem relay which allows VX users to interoperate with Type-1 encryption devices in a VoIP network, and between VoIP networks.

With V.150.1 support, VX can be positioned in network as an MoIP gateway, and also interoperate with V.150.1 compliant FNBDTs.

This guide provides a quick start for setting up VX to operate with a V.150.1 device.